There is a countdown clock added to the National website and they added:

The countdown clock above reminds us that the 34th National opens on Wednesday, July 31. If you purchased a week-long VIP Admission package, you can attend the special VIP Reception beginning at 2:30PM in Room 14 at the Convention Center. Make sure to bring your ticket and pick up your credentials, VIP Gift Package and VIP Autograph Tickets at the Lobby Registration Kiosk before heading over to the Reception. VIPs will be permitted onto the show floor at 3:30 PM